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CDV-DVC: Transform-domain distributed video coding with multiple channel division

机译:CDV-DVC:具有多通道划分的变换域分布式视频编码

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摘要

This paper proposes an efficient distributed coding system based on multiple channel division. We develop the hierarchical motion refinement scheme using DC syndrome bits to generate high quality side information (SI) for Wyner-Ziv (WZ) frames. Moreover, we estimate local distortion characteristics of an SI frame and encode the SI frame in three coding modes: skip mode for the reliable channel, WZ mode for the medium channel, and intra mode for the unreliable channel. No bit is transmitted in the skip mode. Syndrome bits in the WZ mode are adaptively allocated based on the local distortion characteristics. The H.264 intra coding is performed in the intra mode to recover severely erroneous blocks. Experimental results show that the proposed algorithm provides significantly better rate-distortion performance than the state-of-the-art DISCOVER codec.
机译:本文提出了一种基于多通道划分的高效分布式编码系统。我们开发了使用DC校正子位来生成Wyner-Ziv(WZ)帧的高质量边信息(SI)的分层运动细化方案。此外,我们估计SI帧的局部失真特性,并以三种编码模式对SI帧进行编码:可靠信道的跳过模式,中等信道的WZ模式和不可靠信道的帧内模式。在跳过模式下不发送任何位。基于局部失真特性,自适应地分配WZ模式下的综合位。在帧内模式下执行H.264帧内编码,以恢复严重错误的块。实验结果表明,与最新的DISCOVER编解码器相比,该算法提供了更好的速率失真性能。

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